[llvm] [Demo only] Illustrate the llvm-profgen changes to process PEBS memory load events into <IP, DataAddr, Count> Tuples. (PR #142007)

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions h,cpp -- llvm/tools/llvm-profgen/DataAccessPerfReader.cpp llvm/tools/llvm-profgen/DataAccessPerfReader.h llvm/tools/llvm-profgen/PerfReader.cpp llvm/tools/llvm-profgen/ProfiledBinary.cpp llvm/tools/llvm-profgen/ProfiledBinary.h llvm/tools/llvm-profgen/llvm-profgen.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/tools/llvm-profgen/DataAccessPerfReader.cpp b/llvm/tools/llvm-profgen/DataAccessPerfReader.cpp
index 6a02b2d24..c7f933765 100644
--- a/llvm/tools/llvm-profgen/DataAccessPerfReader.cpp
+++ b/llvm/tools/llvm-profgen/DataAccessPerfReader.cpp
@@ -89,4 +89,4 @@ void DataAccessPerfReader::parsePerfTrace(StringRef PerfTrace) {
   }
 }
 
-}  // namespace llvm
+} // namespace llvm
diff --git a/llvm/tools/llvm-profgen/DataAccessPerfReader.h b/llvm/tools/llvm-profgen/DataAccessPerfReader.h
index 31961159f..51f67390e 100644
--- a/llvm/tools/llvm-profgen/DataAccessPerfReader.h
+++ b/llvm/tools/llvm-profgen/DataAccessPerfReader.h
@@ -1,4 +1,5 @@
-//===-- DataAccessPerfReader.h - perfscript reader for data access profiles -----------------------*- C++ -*-===//
+//===-- DataAccessPerfReader.h - perfscript reader for data access profiles
+//-----------------------*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
diff --git a/llvm/tools/llvm-profgen/llvm-profgen.cpp b/llvm/tools/llvm-profgen/llvm-profgen.cpp
index 55972ec96..8cafaa3bb 100644
--- a/llvm/tools/llvm-profgen/llvm-profgen.cpp
+++ b/llvm/tools/llvm-profgen/llvm-profgen.cpp
@@ -206,7 +206,7 @@ int main(int argc, const char *argv[]) {
   } else {
     assert(Binary.get() &&
            "Binary should be initialized for data access profile");
-    
+
     // data access profile.
     SmallVector<StringRef, 4> PerfTraces{PerfScriptFilename};
     auto Reader = std::make_unique<DataAccessPerfReader>(

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https://github.com/llvm/llvm-project/pull/142007